Consider the four-question multiple-choice quiz presented at the beginning of this section a. Explain why the four

Question:

Consider the four-question multiple-choice quiz presented at the beginning of this section
a. Explain why the four questions represent four independent trials.
b. Explain why the number 4 is multiplied into the P(x _ 1)
c. In Answer 5 on page 246, where did 1/3 and 4 come from? Why multiply them to find an expected average?